Nickel Ore Processing Rougher Flotation
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- Nickel Ore Processing Rougher Flotation
Lime addition to the mill also provides for good mixing of lime with the incoming ore. 2. Rougher flotation – Lime is added after primary (typically SAG) and secondary (ball) milling, usually in a conditioning tank, to ensure optimal pH control in the subsequent rougher flotation process. 3.
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Abstract An analysis of flowsheets for processing sulfide and oxide copper ores, reagent modes, processing equipment, and flotation indicators in some domestic and foreign processing plants and productions is carried out. Autogenous and semiautogenous mills are commonly used in the primary grinding stage in ore …
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tion-hydrometallurgical processing of mixed copper ore at the Udokan deposit is considered. The conclu-sions reveal the current trends in the processing of copper ores, including the choice of equipment. Keywords: copper ores, processing, flowsheet, equipment, ore processing, grinding, flotation, reagent mode, ore processing plant, …
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The Bureau of Mines investigated the flotation responses of two copper nickel ore samples from the Duluth Complex with the objective of recovering bulk sulfide concentrates. One of the ores studied was taken from a test pit; the other was taken from a test shaft. The samples were quite similar except that the pit sample analyzed 0.35 pct …
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The aim of this study is to apply process mineralogy as a practical tool for further understanding and predicting the flotation kinetics of the copper sulfide minerals. The minerals' composition and association, grain distribution, and liberation within the ore samples were analyzed in the feed, concentrate, and the tailings of the flotation …
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The Cu/Ni sulfide ore for bench-scale flotation was from the Yanbian Copper–nickel Mine. The results of chemical analysis of the ore are listed in Table 2.It showed that the main composition of the ore for bench-scale flotation is as follows: 27.81% MgO, 38.91% SiO 2, 12.38% Fe 2 O 3 and 6.02% CaO, which only contained 0.20% Cu, …
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This is performed ideally by the "Sub-A" Super Rougher Flotation Machine which was specially developed for this duty. This machine has a double impeller and gives tremendous aeration. The flowsheet in this study is designed to get the maximum recovery from a large tonnage of porphyry copper ore. The Copper Process Flowsheet Copper …
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The original flotation circuit is a typical conventional polymetallic ore flotation (See Fig. 12) where copper is concentrated in the first circuit, and this is …
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• Improved metallurgy uses a conventional standard ultramafic nickel processing flowsheet. o Closed circuit flotation cleaner test work underway to determine overall …
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The use of power ultrasound in mining. L. Gaete-Garretón, in Power Ultrasonics, 2015 35.5.1 The flotation process. One of the most used processes to concentrate mineral from a mine is flotation. To perform a flotation process the mineral is finely ground (particle sizes between 50 and 150 μm), then the ground mineral is mixed with water in a …
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The flotation by surface sulphidisation of the oxidized copper-cobalt-bearing ore from Kimpe (1.97% Cu; 0.66% Co) was studied in order to evaluate its behavior by the analysis of its most ...
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The results of studying the kinetics of rougher flotation of copper-nickel ore in a laboratory flotation machine confirm this assumption. Flotation froth was fractionally removed at certain time intervals: 30, 30, 60, 120, 180, and 180 s. ... Kondrat'eva, A.A., Groo, A.A., and Razvyaznaya, A.V., Engineering Evaluation of …
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gangue minerals, thus leading to nickel loss. Flotation Practice in Nickel Sulde Deposits Nickel sulRde minerals such as pentlandite can, in general, be separated from their gangue by Sotation using a thiol group of collectors like xanthates and alkyl dithiophosphates in the presence of variety of activators, depressants and dispersants. Since ...
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The process exploits the particle size dependence of nickel sulphide flotation and the different ways that pH change and pulp density influence the response of coarse …
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The concentrator uses the two-stage grinding process, the ore is ground to about 85% passing 74 μm prior to flotation, the feed concentration is not more than 30% and the lead rougher bank is organized first; the lead rough concentrate is reground to 92.5% passing 74 μm rougher, and the lead concentrate is produced after four-time …
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optimum conditions for the flotation of nickel, copper and cobalt from a nickel-copper sulphide ore. The parameters investigated include collector dosage, percentage solids, …
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Apart from one high value association of 0.614 between fast floating rate of nickel and gangue measured for rougher feed, no significant gangue–metal correlations …
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While froth flotation is widely used in ore processing, precipitate flotation is often used to remove metals from the dilute solutions. In precipitate flotation, the hydrophilic groups of surfactant ions are orientated toward the surface of the precipitates. Small bubbles are easily trapped on the surface of the precipitate and flotation is ...
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A recently published review of different nickel processing operations worldwide highlighted ore ... inappropriate equipment and adjusting Ni rougher flotation residence time for better selectivity between the main sulphide gangue and the Ni sulphide mineral. ... Nirdosh, R., 2006. A comparative study of kinetics of flotation of a copper ...
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Performing natural experiments on the ore using a rougher concentrate as a carrier material showed that the concentrate yield decreases by 20.52% rel. In the second case, the gold extraction was higher by 4.69% abs. ... accurate bubble size measurement and feature extraction are very important to optimize the flotation process and to …
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ELSEVIER Int. J. Miner. Process. 43 (1995) 209-234 HITERnlITIOIliBaL JOURML OF mlnERgt PRO(ESSln6 The selective flotation of pentlandite from a nickel ore G.D. Senior, W.J. Trahar, P.J. Guy CSIRO Division of Mineral and Process Engineering, Box 312 Rosebank MDC, Clayton, Vic. 3168, Australia Received 14 June …
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The rougher flotation and closed-circuit flotation tests of copper-nickel sulfide ore (1.0 kg) were performed on XFD-63 type flotation machines of different capacities (3.0 L, 1.0 L, obtained from Wuhan Exploration Machinery Co., Ltd.) [5], with mechanically stirring speed of 1610 rpm.The 3.0 L cell was used for rougher and …
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A modal examination of the products produced by the copper flotation rougher-scavenger circuit reveal important information regarding the limits to the efficiency of the process, imposed by mineralogy, fragmentation and flotation capacity. Let's discusses various aspects of rougher flotation circuit performance and how to evaluate …
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The Froth Flotation Process is about taking advantage of the natural hydrophobicity of liberated (well ground) minerals/metals and making/playing on making them hydrophobic (water-repel) individually to …
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In this work, selective flotation of copper-nickel sulfide ore was achieved by using a selective depressant of sodium phytate. Microscale flotation results show that sodium phytate can selectively and effectively depress talc flotation, but has a minor effect on the floatability of chalcopyrite and pentlandite.
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Copper has also been widely produced and used throughout the world for a long time. Copper-nickel sulfide ore is an important source of copper and nickel metals for smelting [3]. As manageable mineral resources are depleted, the copper-nickel sulfide ore process becomes increasingly complex due to more complicated ore properties [4].
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This paper aims to comprehensively review previously published work on processing nickel laterite ores. In particular, it focuses on the mineralogy of laterite …
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With decreasing ore grades, the cost of mineral processing has been escalating due to the high costs associated with grinding larger volumes of ores for liberation. To minimize the embodied cost, mined ores are usually coarse ground for rougher flotation, in which much of the waste (or 'dead') rocks are removed before …
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Selective flocculation can help to enhance flotation performance of laterite ore. The challenges in processing nickel laterite ores using flotation process were …
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Denver type flotation machine, with a stirring speed of 1200 rpm. pH measurements were carried out using a digital pH meter. The rougher flotation experiments were conducted at a 20% solid ratio, while the cleaner flota-tion experiment was conducted at a 10% solid ratio. The flotation experiments were carried out according to the
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Flotation kinetics of pentlandite and violarite contained in copper–nickel ores and the effect of crystallochemical peculiarities of the minerals on their flotation features are studied. Studies of the effect of pentlandite crystallochemical features on its flotation properties have shown that the easiest to float is nickel-enriched pentladite, …
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Section snippets Materials and reagents. The pentlandite ore sample with 0.58% Ni was crushed to a size of −2.36 mm before grinding and flotation.Mineralogy analysis shows that pentlandite was the main nickel mineral with small amounts of millerite, violarite and heazlewoodite while chrysotile, antigorite and lizardite were the main …
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Abstract The review of copper ore processing flow charts in application at ore mills in Russia and abroad is presented. The scope of the analysis embraced the reagent regimes and flotation performance. Brief information about collecting agents, frothers and depressants is given. The influence of actuation medium in flotation of …
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1. Background. The application of flotation on a reasonable scale within the gold-mining industry commenced in the early 1930s following the introduction of water-soluble flotation collectors (specifically xanthates and dithiophosphate collectors) that allowed differential flotation of sulfide minerals (Weinig and Carpenter, 1937, Rabone, …
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Fig. 2 shows the P 80 of different mineral species in an ore for a major copper operation. These values vary significantly, with the P 80 of total solids, sulfide minerals, iron minerals, copper minerals and molybdenum are ∼ 200, 105, 125, 94 and 85, respectively. Flotation optimization of complex ores often requires a better understanding of the size …
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As a result, rougher flotation grade-recovery curves dependent on ore types and water quality are presented over the predicted life of the mine. The simulation results can be exploited in project design to maximize the recovery of valuable minerals and to ensure environmentally sound and profitable mining operations.
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